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| author | Jason Wang <jasowang@redhat.com> | 2025-08-21 14:46:36 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-10-01 07:24:43 -0400 |
| commit | b16060c5c7d56455da3c3c50b4a20a83c2a30810 (patch) | |
| tree | 26ccf12be6288a3df6925c0109f5387efb99a7eb /include/linux/virtio_ring.h | |
| parent | b41cb3bcf67fcb7b8297e5acc5bb3309c96c2ff2 (diff) | |
| download | lwn-b16060c5c7d56455da3c3c50b4a20a83c2a30810.tar.gz lwn-b16060c5c7d56455da3c3c50b4a20a83c2a30810.zip | |
virtio: introduce virtio_map container union
Following patch will introduce the mapping operations for virtio
device. In order to achieve this, besides the dma device, virtio core
needs to support a transport or device specific mapping metadata as well.
So this patch introduces a union container of a dma device. The idea
is the allow the transport layer to pass device specific mapping
metadata which will be used as a parameter for the virtio mapping
operations. For the transport or device that is using DMA, dma device
is still being used.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250821064641.5025-5-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Diffstat (limited to 'include/linux/virtio_ring.h')
| -rw-r--r-- | include/linux/virtio_ring.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h index 9b33df741b63..c97a12c1cda3 100644 --- a/include/linux/virtio_ring.h +++ b/include/linux/virtio_ring.h @@ -3,6 +3,7 @@ #define _LINUX_VIRTIO_RING_H #include <asm/barrier.h> +#include <linux/virtio.h> #include <linux/irqreturn.h> #include <uapi/linux/virtio_ring.h> @@ -79,9 +80,9 @@ struct virtqueue *vring_create_virtqueue(unsigned int index, /* * Creates a virtqueue and allocates the descriptor ring with per - * virtqueue DMA device. + * virtqueue mapping operations. */ -struct virtqueue *vring_create_virtqueue_dma(unsigned int index, +struct virtqueue *vring_create_virtqueue_map(unsigned int index, unsigned int num, unsigned int vring_align, struct virtio_device *vdev, @@ -91,7 +92,7 @@ struct virtqueue *vring_create_virtqueue_dma(unsigned int index, bool (*notify)(struct virtqueue *vq), void (*callback)(struct virtqueue *vq), const char *name, - struct device *dma_dev); + union virtio_map map); /* * Creates a virtqueue with a standard layout but a caller-allocated |